变质岩潜山油藏纵向非均质性研究

Study on vertical heterogeneity in metamorphic rock buried hill reservoir

XG7油藏是一个深层、巨厚、变质岩潜山油藏,含油幅度超过2 300m。对于这种巨厚油层的潜山油藏,油藏纵向非均质性特征及分布规律是影响开发方式选择、井网井距设计的重要因素。对油藏岩性进行了定性、定量研究,并通过动、静态资料相结合的方法研究了潜山纵向非均质性特点和划分储层段的方法。XG7油藏以分段性认识作为基础进行开发设计,取得了很好的开发效果和经济效益。

XG7 reservoir is a deep,massive,metamorphic rock buried hill reservoir with oil-bearing relief over 2300m.For such a massive buried hill reservoir,vertical reservoir heterogeneity and distribution are important influencing factors on development scheme and well patter and spacing.The reservoir lithology is studied qualitatively and quantitatively.The characteristics of vertical heterogeneity and the method of reservoir interval division are studied by integrating dynamic and static data.The development plan for XG7 reservoir is made on sectional basis,and has achieved very good development effect and economic benefit.